3 papers
math.GT2021
Equivariant 4-genera of strongly invertible and periodic knots
Keegan Boyle, Ahmad Issa
We study the equivariant genera of strongly invertible and periodic knots. Our techniques include some new strongly invertible concordance group invariants, Donaldson's theorem, an…
math.GT2018
Smoothly embedding Seifert fibered spaces in
Ahmad Issa, Duncan McCoy
Using an obstruction based on Donaldson's theorem, we derive strong restrictions on when a Seifert fibered space over an orient…
math.GT2018
On Seifert fibered spaces bounding definite manifolds
Ahmad Issa, Duncan McCoy
We establish an inequality which gives strong restrictions on when the standard definite plumbing intersection lattice of a Seifert fibered space over can embed into a standa…